Earplug



FIG. 1 is a perspective view showing the new design for an earplug.

FIG. 2 is a bottom view thereof;

FIG. 3 is a top perspective view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a left view thereof, the right view, front view and rear view being identical thereto.

The broken line showing portions of the article is included for the purpose of illustrating environmental structure and forms no part of the claimed design. Any shading is provided to illustrate contour only and is not an indication of surface texture. 

CLAIM The ornamental design for an earplug, as shown and described. 